n. Welsh chronicler who wrote an account of the kings of Britain which is now believed to contain little historical fact but it is a source of the Arthurian legend (circa 1100-1154)

Etymologies

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Examples

The Saxons eventually turned on him and Vortigern met his death in a blazing castle tower in Wales at the hands of Geoffrey of Monmouth, although some sources claim that the tower was mysteriously struck by lightning, catching it on fire.

The story behind the legend of King Arthur was first introduced by Geoffrey of Monmouth, a writer whose "History of the Kings of Britain" was among the most popular books of the Middle Ages, though it was largely fictitious.